The name in axis profile (always serialnumber of the drive) has no connection to the name of the axis object in the motion (given by user). So you would need to know which motion object is connected to which drive on your own or read it out via acyclic communication. Have a look to this topic for further information about parameter access via DriveConnect app.
If you like to have access to drives in different machines with the same address in the EtherCat each, you can use e.g. CXA_Ethercatmaster.IL_ECATSoeRead function block.
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